System Data on iPhone primarily consists of temporary files, browser cache, and files used by iOS. Depending on your usage, System Data can vary largely, sometimes even exceeding 100GB.

Repair Outlook: This will clear local settings and any unsaved Outlook data This dialog box keeps popping up for some. If you hit NO, nothing will happen, and you can forget about it.

System Data on iPhone primarily consists of temporary files, browser cache, and files used by iOS. Depending on your usage, System Data can vary largely, sometimes even exceeding 100GB.